ICHNEUMON-FLIES, PART 21 EPHIALTINAE 135 



sternum and lower part of mesopleurum sometimes light brown; 

 tegula and hind corner of pro no turn yellowish white, the tegula 

 fulvous apically; front and middle legs fulvous, their tarsi, tibiae in 

 front, and apex of femora in front, pale yellowish fulvous; apical 

 half of last segment of front tarsus tinged with brown; apical 0.6 of 

 last segment of middle tarsus brown; hind coxa, trochanters, and 

 femur fulvous, the femur with a subapical infuscation, its extreme 

 apex pale; hind tibia fuscous, its basal 0.15 whitish and a light brown 

 stripe beneath on its basal half; hind tarsus fuscous, the base of its 

 basitarsus stramineous; stigma blackish brown. 



Female: Punctures on lateral 0.1 of face usually in a single vertical 

 row paralleling eye margin and leaving the rest of this area im- 

 punctate; subdorsal hair sockets on front face of hind femur separated 

 by about 0.9 the length of the hairs. 



Black. Clypeus ferruginous; mandible often stained with fer- 

 ruginous ; labial palpus and base of maxillary palpus dark brown, the 

 rest of maxillary palpus brown ; mesosternum and lower part of meso- 

 pleurum sometimes light brown; tegula pale yellowish, its apex 

 fulvous; narrow hind corner of pronotum fulvous; legs fulvous, the 

 hind femur often with a very faint subapical infuscation, the apex of 

 hind tibia infuscate, and the hind tarsus brownish, darker apically; 

 stigma blackish or blackish brown, usually a little paler medially; 

 wing membrane usually tinged with light brown. 



The type of Ephialtes gigas Walsh is destro3 r ed, but the description 

 leaves little doubt as to its identity. Walsh describes particularly 

 the rather elongate tubercles on the tergites, the "smoky yellow" 

 tinge of the wings, and the legs as entirely pale rufous except for 

 infuscation on the tarsi and on the tip of the hind tibia. 



Specimens (28 cf, 409): From Colorado (Denver); Connecticut 

 (West Rock); Idaho (Lewiston and Riggins); Maine (Rangeley); 

 Manitoba (Aweme and Riding Mountain Park); Massachusetts 

 (Harwich Port, Sherborn, and Wollaston) ; New Brunswick (Waweig) ; 

 New Jersey (Camden) ; New York (Geneva, Ithaca, Millwood, and 

 Oak Hill in Greene Co.); Northwest Territories (Cameron Bay on 

 Great Bear Lake); Ohio (Hocking Co.); Ontario (Niagara Glen, 

 Ottawa, Sudbury, and Toronto); Pennsylvania (Clarke's Valley in 

 Dauphin Co., Crisp in Westmoreland Co., Huntington, and Spring 

 Brook) ; Quebec (Montreal) ; Saskatchewan (Indian Head) ; South 

 Dakota (Yankton); Texas; Vermont (Laurel Lake near Jacksonville); 

 and Virginia (Meadows of Dan in Patrick Co.). 



Adults have been collected from early spring to late fall. The 

 records seem to indicate a spring and early summer emergence, with 

 females living into the fall. The emergence of males is mostly from 

 late April to early June, diminishing into the summer, with unusually 



